Bài viết này trình bày phương pháp toán học phân tích đặc điểm sinh sản và nhịp điệu đẻ trứng của mọt ngô S. zeamais. Trong điều kiện phòng thí nghiệm, với vật liệu thí nghiệm là gạo, thực nghiệm cho thấy, sau khi vũ hóa, mọt trưởng thành S. zeamais có thời gian sống rất dài, tới 150 ngày. | Phân tích đặc điểm sinh sản và nhịp điệu đẻ trứng của mọt ngô Sitophilus zeamais (Motschulsky) TAP CHI SINH HOC 2019, 41(2): 29–37 DOI: ANALYSIS OF REPRODUCTIVE TRAITS AND LAYING EGG RHYTHM OF MAIZE WEEVIL Sitophilus zeamais (Motschulsky) Nguyen Van Dzuong1,2,*, Khuat Dang Long3, Le Xuan Que4 1 Tay Bac University, Son La, Vietnam 2 Graduate University of Science and Technology, VAST, Vietnam 3 Institute of Ecology and Biological Resources, VAST, Vietnam 4 Institute for Tropical Technology, VAST, Vietnam Received 21 March 2019, accepted 10 May 2019 ABSTRACT The maize weevil, Sitophilus zeamais (Motschulsky), is a serious pest affecting a wide range of cereal crops, such as maize, rice, beans and other stored dried grains. As a S. zeamais female can keep laying eggs for a long time throughout its life after chewing its way into the grains, most development stages of the maize weevil, such as eggs, larvae and pupae, can always be found in stored maize grains. Our experiment with S. zeamais on long grain rice showed that 10 days after eclosion and mating, maize weevil females started laying eggs for a period of 150 days. On average, a S. zeamais female laid eggs, of which, up to were laid in the first 7–8 weeks (with the remaining in the latter half of the 150 day period), and were laid within day 55–95. The egg laying pattern of S. zeamais was modeled using cubic polynomials, which described the maximum percentages of eggs laid at day 15, 35, 75, 95 and 105. Keywords: Sitophilus zeamais, laying egg rhythm, maize weevil, reproduction, store insects. Citation: Nguyen Van Dzuong, Khuat Dang Long, Le Xuan Que, 2019. Analysis of reproductive traits and laying egg rhythm of maize weevil Sitophilus zeamais (Motschulsky). Tap chi Sinh hoc, 41(2): 29–37. . * Corresponding author email: .
